參數(shù)資料
型號： HCD66751BP
廠商： Hitachi,Ltd.
英文描述： 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
中文描述： 128 × 128點(diǎn)圖形LCD控制器/驅(qū)動器，四灰度函數(shù)
文件頁數(shù)： 42/96頁
文件大小： 2068K
代理商： HCD66751BP
HD66750/1
42
Graphics Operation Function
The HD66750/1 can greatly reduce the load of the microcomputer graphics software processing through the
16-bit bus architecture and graphics-bit operation function. This function supports the following:
1. A write data mask function that selectively rewrites some of the bits in the 16-bit write data.
2. A bit rotation function that shifts and writes the data sent from the microcomputer in a bit unit.
3. A logical operation function that writes the data sent from the microcomputer and the original RAM
data by a logical operation.
S nc e t he di s pla y dat a i n t he gra phi cs R AM (C GR AM ca n be qui ckl y re wri en, t he l oad of t he
m croc om pute r proc es s ng ca n be re duce d i n t he l ar ge di s pla y s cr ee n whe n a font pat er n, s uch as kanj
characters, is developed for any position (BiTBLT processing).
The gra phi cs bi oper at on ca n be cont r oll e d by com bi ni ng t he ent r y m ode re gi st e r, t he bi s et val ue of t he
RAM-write-data mask register, and the read/write from the microcomputer.
Table 17
Graphics Operation
Bit Setting
Operation Mode
I/D
AM
LG
Operation and Usage
Write mode 1
0/1
00
00
Horizontal data replacement, horizontal-border
drawing
Write mode 2
0/1
01
00
Vertical data replacement, font development, vertical-
border drawing
Write mode 3
0/1
10
00
Vertical data replacement with two-word width, kanji-
font development
Read/write mode 1
0/1
00
01 10 11
Horizontal data replacement with logical operation,
horizontal-border drawing
Read/write mode 2
0/1
01
01 10 11
Vertical data replacement with logical operation,
vertical-border drawing
Read/write mode 3
0/1
10
01 10 11
Horizontal data replacement with two-word-width
logical operation
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